<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
	</head>
	<body>
		<script type="text/javascript">
			var a =10
			var b = "5"
			console.log(a-b)
			console.log(a+b)
		</script>
	</body>
</html>
